Steerable laser probe

ABSTRACT

A steerable laser probe may include a handle having a handle distal end and a handle proximal end, an auto-fixing actuation control, a housing tube having a housing tube distal end and a housing tube proximal end, a first housing tube portion having a first stiffness, a second housing tube portion having a second stiffness, and an optic fiber disposed within an inner bore of the handle and the housing tube. An actuation of the auto-fixing actuation control may gradually curve the housing tube. A gradual curving of the housing tube may gradually curve the optic fiber.

CROSS-REFERENCE TO RELATED APPLICATIONS

This Application claims the benefit of U.S. Provisional Application No. 61/699,801, filed Sep. 11, 2012.

FIELD OF THE INVENTION

The present disclosure relates to a surgical instrument, and, more particularly, to a steerable laser probe.

BACKGROUND OF THE INVENTION

A wide variety of ophthalmic procedures require a laser energy source. For example, ophthalmic surgeons may use laser photocoagulation to treat proliferative retinopathy. Proliferative retinopathy is a condition characterized by the development of abnormal blood vessels in the retina that grow into the vitreous humor. Ophthalmic surgeons may treat this condition by energizing a laser to cauterize portions of the retina to prevent the abnormal blood vessels from growing and hemorrhaging.

In order to increase the chances of a successful laser photocoagulation procedure, it is important that a surgeon is able aim the laser at a plurality of targets within the eye, e.g., by guiding or moving the laser from a first target to a second target within the eye. It is also important that the surgeon is able to easily control a movement of the laser. For example, the surgeon must be able to easily direct a laser beam by steering the beam to a first position aimed at a first target, guide the laser beam from the first position to a second position aimed at a second target, and hold the laser beam in the second position. Accordingly, there is a need for a surgical laser probe that can be easily guided to a plurality of targets within the eye.

BRIEF SUMMARY OF THE INVENTION

The present disclosure presents a steerable laser probe. In one or more embodiments, a steerable laser probe may comprise a handle having a handle distal end and a handle proximal end, an auto-fixing actuation control, a housing tube having a housing tube distal end and a housing tube proximal end, a first housing tube portion having a first stiffness, a second housing tube portion having a second stiffness, and an optic fiber disposed within an inner bore of the handle and the housing tube. Illustratively, an actuation of the auto-fixing actuation control may be configured to gradually curve the housing tube. In one or more embodiments, a gradual curving of the housing tube may be configured to gradually curve the optic fiber.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and further advantages of the present invention may be better understood by referring to the following description in conjunction with the accompanying drawings in which like reference numerals indicate identical or functionally similar elements:

FIGS. 1A and 1B are schematic diagrams illustrating an exploded view of a handle assembly;

FIGS. 2A and 2B are schematic diagrams illustrating a handle;

FIGS. 3A, 3B, and 3C are schematic diagrams illustrating a housing tube;

FIG. 4 is a schematic diagram illustrating an exploded view of a steerable laser probe assembly;

FIGS. 5A, 5B, 5C, 5D, and 5E are schematic diagrams illustrating a gradual curving of an optic fiber;

FIGS. 6A, 6B, 6C, 6D, and 6E are schematic diagrams illustrating a gradual straightening of an optic fiber;

FIGS. 7A and 7B are schematic diagrams illustrating an exploded view of a handle assembly;

FIGS. 8A and 8B are schematic diagrams illustrating a handle;

FIG. 9 is a schematic diagram illustrating a housing tube;

FIG. 10 is a schematic diagram illustrating an exploded view of a steerable laser probe assembly;

FIGS. 11A, 11B, 11C, 11D, and 11E are schematic diagrams illustrating a gradual curving of an optic fiber;

FIGS. 12A, 12B, 12C, 12D, and 12E are schematic diagrams illustrating a gradual straightening of an optic fiber.

DETAILED DESCRIPTION OF AN ILLUSTRATIVE EMBODIMENT

FIGS. 1A and 1B are schematic diagrams illustrating an exploded view of a handle assembly 100. FIG. 1A illustrates a side view of a handle assembly 100. Illustratively, a handle assembly 100 may comprise a handle end cap 105 having a handle end cap distal end 106 and a handle end cap proximal end 107, an actuation mechanism 110 having an actuation mechanism distal end 111 and an actuation mechanism proximal end 112, an auto-fixing actuation control 120 having an auto-fixing actuation control distal end 121 and an auto-fixing actuation control proximal end 122, a handle base 130 having a handle base distal end 131 and a handle base proximal end 132, a handle end cap interface 135, an auto-fixing component housing 140, and a handle base channel 145.

FIG. 1B illustrates a cross-sectional view of a handle assembly 100. In one or more embodiments, a handle assembly 100 may comprise an actuation mechanism guide 150, a handle base housing 155, a handle base interface 156, an optic fiber housing 160, an inner bore 170, a housing tube housing 175, a distal chamber 180, and a housing tube guide 190. Illustratively, handle end cap 105, actuation mechanism 110, auto-fixing actuation control 120, and handle base 130 may be manufactured from any suitable material, e.g., polymers, metals, metal alloys, etc., or from any combination of suitable materials.

FIGS. 2A and 2B are schematic diagrams illustrating a handle 200. FIG. 2A illustrates a side view of a handle 200. Illustratively, handle 200 may comprise a handle distal end 201 and a handle proximal end 202. In one or more embodiments, handle 200 may comprise an actuation control guide 210 having an actuation control guide distal end 211 and an actuation control guide proximal end 212. Illustratively, handle 200 may be manufactured from any suitable material, e.g., polymers, metals, metal alloys, etc., or from any combination of suitable materials.

FIG. 2B illustrates a cross-sectional view of a handle 200. Illustratively, actuation mechanism 110 may be disposed within handle end cap 105 and handle base 130. In one or more embodiments, a portion of handle base 130 may be disposed within handle base housing 155, e.g., handle base proximal end 132 may be disposed within handle base housing 155. Illustratively, handle base 130 may be disposed within handle base housing 155, e.g., handle base proximal end 132 may interface with handle base interface 156. For example, handle base 130 may be disposed within end cap 105 wherein end cap distal end 106 may interface with handle end cap interface 135. In one or more embodiments, handle base 130 may be fixed within handle base housing 155, e.g., by an adhesive or any suitable fixation means. For example, handle base 130 may be fixed within handle base housing 155 by a press fit, a setscrew, a weld, etc. Illustratively, handle base 130 and handle end cap 105 may be manufactured as a single unit.

In one or more embodiments, auto-fixing actuation control 120 may be disposed within actuation control guide 210. For example, auto-fixing actuation control 120 may be disposed within actuation control guide 210 wherein auto-fixing actuation control 120 is adjacent to auto-fixing component housing 140. Illustratively, actuation control guide 210 may comprise a portion of handle base channel 145. In one or more embodiments, handle end cap distal end 106 may comprise actuation control guide proximal end 212. Illustratively, auto-fixing actuation control 120 may be configured to actuate within actuation control guide 210. In one or more embodiments, actuation mechanism 110 may be configured to actuate within actuation mechanism guide 150. Illustratively, an actuation of auto-fixing actuation control 120 may be configured to actuate actuation mechanism 110. In one or more embodiments, an actuation of auto-fixing actuation control 120 within actuation control guide 210 may be configured to actuate actuation mechanism 110 within actuation mechanism guide 150.

Illustratively, an actuation of auto-fixing actuation control 120 within actuation control guide 210, e.g., away from actuation control guide proximal end 212 and towards actuation control guide distal end 211, may be configured to actuate actuation mechanism 110 within actuation mechanism guide 150, e.g., away from handle proximal end 202 and towards handle distal end 201. In one or more embodiments, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to extend actuation mechanism 110 relative to handle proximal end 202. Illustratively, an extension of actuation mechanism 110 relative to handle proximal end 202 may be configured to extend housing tube housing 175 relative to handle proximal end 202.

In one or more embodiments, an actuation of auto-fixing actuation control 120 within actuation control guide 210, e.g., away from actuation control guide distal end 211 and towards actuation control guide proximal end 212 may be configured to actuate actuation mechanism 110 within actuation mechanism guide 150, e.g., towards handle proximal end 202 and away from handle distal end 201. Illustratively, a retraction of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to retract actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, a retraction of actuation mechanism 110 relative to handle proximal end 202 may be configured to retract housing tube housing 175 relative to handle proximal end 202.

FIGS. 3A, 3B, and 3C are schematic diagrams illustrating a housing tube 300. In one or more embodiments, housing tube 300 may comprise a housing tube distal end 301 and a housing tube proximal end 302. Housing tube 300 may be manufactured from any suitable material, e.g., polymers, metals, metal alloys, etc., or from any combination of suitable materials. Illustratively, housing tube 300 may be manufactured with dimensions configured for microsurgical procedures. FIG. 3A illustrates a housing tube 300 oriented to illustrate a first housing tube portion 320. Illustratively, first housing tube portion 320 may have a first stiffness. FIG. 3B illustrates a housing tube 300 oriented to illustrate a second housing tube portion 330. Illustratively, second housing tube portion 330 may have a second stiffness. In one or more embodiments, the second stiffness may be greater than the first stiffness. Illustratively, first housing tube portion 320 may comprise a first material having a first stiffness. In one or more embodiments, second housing tube portion 330 may comprise a second material having a second stiffness. Illustratively, the second stiffness may be greater than the first stiffness.

In one or more embodiments, housing tube 300 may comprise a non-uniform inner diameter or a non-uniform outer diameter, e.g., to vary a stiffness of one or more portions of housing tube 300. Illustratively, a first housing tube portion 320 may comprise a first inner diameter of housing tube 300 and a second housing tube portion 330 may comprise a second inner diameter of housing tube 300. In one or more embodiments, the first inner diameter of housing tube 300 may be larger than the second inner diameter of housing tube 300. Illustratively, a first housing tube portion 320 may comprise a first outer diameter of housing tube 300 and a second housing tube portion 330 may comprise a second outer diameter of housing tube 300. In one or more embodiments, the first outer diameter of housing tube 300 may be smaller than the second outer diameter of housing tube 300.

In one or more embodiments, first housing tube portion 320 may comprise one or more apertures configured to produce a first stiffness of first housing tube portion 320. Illustratively, second housing tube portion 330 may comprise a solid portion of housing tube 300 having a second stiffness. In one or more embodiments, the second stiffness may be greater than the first stiffness. Illustratively, first housing tube portion 320 may comprise one or more apertures configured to produce a first stiffness of first housing tube portion 320. In one or more embodiments, second housing tube portion 330 may comprise one or more apertures configured to produce a second stiffness of second housing tube portion 330. Illustratively, the second stiffness may be greater than the first stiffness.

In one or more embodiments, first housing tube portion 320 may comprise a plurality of slits configured to separate one or more solid portions of housing tube 300. Illustratively, a plurality of slits may be cut, e.g., laser cut, into first housing tube portion 320. In one or more embodiments, first housing tube portion 320 may comprise a plurality of slits configured to minimize a force of friction between housing tube 300 and a cannula, e.g., as housing tube 300 is inserted into the cannula or as housing tube 300 is extracted from the cannula. For example, each slit of the plurality of slits may comprise one or more arches configured to minimize a force of friction between housing tube 300 and a cannula.

FIG. 3C illustrates an angled view of housing tube 300. Illustratively, an optic fiber 310 may be disposed within housing tube 300. In one or more embodiments, optic fiber 310 may comprise an optic fiber distal end 311 and an optic fiber proximal end 312. Illustratively, optic fiber 310 may be configured to transmit light, e.g., laser light, illumination light, etc. In one or more embodiments, optic fiber 310 may be disposed within housing tube 300 wherein optic fiber distal end 311 may be adjacent to housing tube distal end 301. Illustratively, optic fiber 310 may be disposed within housing tube 300 wherein a portion of optic fiber 310 may be adjacent to a portion of first housing tube portion 320. In one or more embodiments, a portion of optic fiber 310 may be fixed to an inner portion of housing tube 300, e.g., by an adhesive or any suitable fixation means.

FIG. 4 is a schematic diagram illustrating an exploded view of a steerable laser probe assembly 400. In one or more embodiments, a steerable laser probe assembly 400 may comprise a handle 200, a housing tube 300 having a housing tube distal end 301 and a housing tube proximal end 302, an optic fiber 310 having an optic fiber distal end 311 and an optic fiber proximal end 312, an auto-fixing component 420 having an auto-fixing component distal end 421 and an auto-fixing component proximal end 422, and a light source interface 410. Illustratively, light source interface 410 may be configured to interface with optic fiber 310, e.g., at optic fiber proximal end 312. In one or more embodiments, light source interface 410 may comprise a standard light source connecter, e.g., an SMA connector.

Illustratively, housing tube 300 may be disposed within housing tube housing 175, actuation mechanism guide 150, and housing tube guide 190. In one or more embodiments, a portion of housing tube 300 may be fixed within housing tube housing 175, e.g., housing tube proximal end 302 may be fixed within housing tube housing 175. Illustratively, a portion of housing tube 300 may be fixed within housing tube housing 175, e.g., by an adhesive or any suitable fixation means. For example, a portion of housing tube 300 may be fixed within housing tube housing 175 by a press fit, a set screw, etc. In one or more embodiments, housing tube 300 may be fixed within housing tube housing 175 wherein housing tube distal end 301 extends from handle distal end 201.

Illustratively, optic fiber 310 may be disposed within optic fiber housing 160, actuation mechanism guide 150, inner bore 170, housing tube 300, and housing tube guide 190. In one or more embodiments, optic fiber 310 may be disposed within housing tube 300 wherein optic fiber distal end 311 may be adjacent to housing tube distal end 301. Illustratively, a portion of optic fiber 310 may be fixed within housing tube 300, e.g., by an adhesive or any suitable fixation means. In one or more embodiments, a portion of optic fiber 310 may be fixed within optic fiber housing 160, e.g., by an adhesive or any suitable fixation means. Illustratively, optic fiber 310 may be fixed within optic fiber housing 160 and optic fiber 310 may be fixed to a portion of housing tube 300.

In one or more embodiments, an actuation of auto-fixing actuation control 120 within actuation control guide 210, e.g., towards actuation control guide distal end 211 and away from actuation control guide proximal end 212, may be configured to actuate actuation mechanism 110 within actuation mechanism guide 150, e.g., towards handle distal end 201 and away from handle proximal end 202. Illustratively, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to extend actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, an extension of actuation mechanism 110 relative to handle proximal end 202 may be configured to extend housing tube housing 175 relative to handle proximal end 202. Illustratively, an extension of housing tube housing 175 relative to handle proximal end 202 may be configured to extend housing tube 300 relative to handle proximal end 202. In one or more embodiments, an extension of housing tube 300 relative to handle proximal end 202 may be configured to extend housing tube 300 relative to optic fiber 310. Illustratively, a portion of optic fiber 310, e.g., a portion of optic fiber 310 fixed to housing tube 300, may be configured to resist an extension of housing tube 300 relative to optic fiber 310. In one or more embodiments, optic fiber 310 may be configured to prevent housing tube 300 from extending relative to optic fiber 310. Illustratively, an extension of housing tube 300 relative to optic fiber 310 may be configured to apply a force to a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, an application of a force to a portion of housing tube 300, e.g., first housing tube portion 320, may be configured to compress a portion of housing tube 300. Illustratively, a compression of a portion of housing tube 300 may be configured to cause housing tube 300 to gradually curve. In one or more embodiments, a gradual curving of housing tube 300 may be configured to gradually curve optic fiber 310.

In one or more embodiments, an actuation of auto-fixing actuation control 120 within actuation control guide 210, e.g., towards actuation control guide proximal end 212 and away from actuation control guide distal end 211, may be configured to actuate actuation mechanism 110 within actuation mechanism guide 150, e.g., towards handle proximal end 202 and away from handle distal end 201. Illustratively, a retraction of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to retract actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, a retraction of actuation mechanism 110 relative to handle proximal end 202 may be configured to retract housing tube housing 175 relative to handle proximal end 202. Illustratively, a retraction of housing tube housing 175 relative to handle proximal end 202 may be configured to retract housing tube 300 relative to handle proximal end 202. In one or more embodiments, a retraction of housing tube 300 relative to handle proximal end 202 may be configured to retract housing tube 300 relative to optic fiber 310. Illustratively, a portion of optic fiber 310, e.g., a portion of optic fiber 310 fixed to housing tube 300, may be configured to facilitate a retraction of housing tube 300 relative to optic fiber 310. In one or more embodiments, a retraction of housing tube 300 relative to optic fiber 310 may be configured to reduce a force applied to a portion of housing tube 300, e.g., first housing tube portion 320. Illustratively, a reduction of a force applied to a portion of housing tube 300, e.g., first housing tube portion 320, may be configured to decompress a portion of housing tube 300. In one or more embodiments, a decompression of a portion of housing tube 300 may be configured to cause housing tube 300 to gradually straighten. Illustratively, a gradual straightening of housing tube 300 may be configured to gradually straighten optic fiber 310.

In one or more embodiments, auto-fixing component 420 may be disposed within auto-fixing component housing 140. Illustratively, auto-fixing component 420 may be fixed within auto-fixing component housing 140, e.g., by an adhesive or any suitable fixation means. In one or more embodiments, auto-fixing component 420 may be disposed within auto-fixing component housing 140 wherein a portion of auto-fixing component 420 may be adjacent to a portion of auto-fixing actuation control 120. Illustratively, auto-fixing component 420 may be configured to produce a magnetic field, e.g., auto-fixing component 420 may comprise a permanent magnet. In one or more embodiments, auto-fixing component 420 may comprise a ferromagnetic material, e.g., auto-fixing component 420 may comprise a ferrimagnetic material. Illustratively, auto-fixing actuation control 120 may be configured to produce a magnetic field, e.g., auto-fixing actuation control 120 may comprise a permanent magnetic. In one or more embodiments, auto-fixing actuation control 120 may comprise a ferromagnetic material, e.g., auto-fixing actuation control 120 may comprise a ferrimagnetic material. Illustratively, auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 120 in a position within actuation control guide 210, e.g., a magnetic force attracting auto-fixing actuation control 120 to auto-fixing component 420 may be configured to hold auto-fixing actuation control 120 fixed in a position within actuation control guide 210. In one or more embodiments, auto-fixing actuation control 120 may be configured to temporarily fix auto-fixing actuation control 120 in a position within actuation control guide 210, e.g., a magnetic force attracting auto-fixing component 420 to auto-fixing actuation control 120 may be configured to temporarily hold auto-fixing actuation control 120 fixed in a position within actuation control guide 210. Illustratively, both auto-fixing component 420 and auto-fixing actuation control 120 may be configured to temporarily fix auto-fixing actuation control 120 in a position within actuation control guide 210, e.g., auto-fixing component 420 and auto-fixing actuation control 120 may both comprise permanent magnets having poles oriented to attract auto-fixing component 420 to auto-fixing actuation control 120 and to attract auto-fixing actuation control 120 to auto-fixing component 420.

In one or more embodiments, a surgeon may actuate auto-fixing actuation control 120 within actuation control guide 210, e.g., by applying a force to a portion of auto-fixing actuation control 120 until auto-fixing actuation control 120 is in a first desired position within actuation control guide 210. Illustratively, the surgeon may then remove the force applied to auto-fixing actuation control 120 and perform a portion of a surgical procedure, e.g., auto-fixing actuation control 120 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 120 in the first desired position within actuation control guide 210. In one or more embodiments, the surgeon may actuate auto-fixing actuation control 120 within actuation control guide 210, e.g., by applying a force to a portion of auto-fixing actuation control 120 until auto-fixing actuation control 120 is in a second desired position within actuation control guide 210. Illustratively, the surgeon may then remove the force applied to auto-fixing actuation control 120 and perform a portion of a surgical procedure, e.g., auto-fixing actuation control 120 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 120 in the second desired position within actuation control guide 210. In one or more embodiments, the surgeon may actuate auto-fixing actuation control 120 within actuation control guide 210, e.g., by applying a force to a portion of auto-fixing actuation control 120 until auto-fixing actuation control 120 is in a third desired position within actuation control guide 210. Illustratively, the surgeon may then remove the force applied to auto-fixing actuation control 120 and perform a portion of a surgical procedure, e.g., auto-fixing actuation control 120 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 120 in the third desired position within actuation control guide 210. In one or more embodiments, auto-fixing actuation control 120 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 120 in any desired position within actuation control guide 210.

FIGS. 5A, 5B, 5C, 5D, and 5E are schematic diagrams illustrating a gradual curving of an optic fiber 310. FIG. 5A illustrates a straight optic fiber 500. In one or more embodiments, optic fiber 310 may comprise a straight optic fiber 500, e.g., when housing tube 300 is fully retracted relative to optic fiber 310. Illustratively, optic fiber 310 may comprise a straight optic fiber 500, e.g., when auto-fixing actuation control 120 is fully refracted relative to actuation control guide proximal end 212. In one or more embodiments, optic fiber 310 may comprise a straight optic fiber 500, e.g., when actuation mechanism 110 is fully retracted relative to handle proximal end 202. For example, optic fiber 310 may comprise a straight optic fiber 500, e.g., when first housing tube portion 320 is fully decompressed. Illustratively, a line tangent to optic fiber distal end 311 may be parallel to a line tangent to housing tube proximal end 302, e.g., when optic fiber 310 comprises a straight optic fiber 500. In one or more embodiments, auto-fixing actuation control 120 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 120 in a first fixed position within actuation control guide 210. Illustratively, optic fiber 310 may comprise a straight optic fiber 500, e.g., when auto-fixing actuation control 120 is fixed in the first fixed position within actuation control guide 210.

FIG. 5B illustrates an optic fiber in a first curved position 510. In one or more embodiments, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to gradually curve optic fiber 310 from a straight optic fiber 500 to an optic fiber in a first curved position 510. Illustratively, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to extend actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, an extension of actuation mechanism 110 relative to handle proximal end 202 may be configured to extend housing tube 300 relative to optic fiber 310. Illustratively, a portion of optic fiber 310, e.g., a portion of optic fiber 310 fixed to housing tube 300, may be configured to resist an extension of housing tube 300 relative to optic fiber 310. In one or more embodiments, a portion of optic fiber 310 may be configured to apply a force to a portion of housing tube 300, e.g., to resist an extension of housing tube 300 relative to optic fiber 310. Illustratively, an application of a force to a portion of housing tube 300 may be configured to compress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a compression of a portion of housing tube 300 may cause housing tube 300 to gradually curve. Illustratively, a gradual curving of housing tube 300 may be configured to gradually curve optic fiber 310, e.g., from a straight optic fiber 500 to an optic fiber in a first curved position 510. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a first angle, e.g., when optic fiber 310 comprises an optic fiber in a first curved position 510. In one or more embodiments, the first angle may comprise any angle greater than zero degrees. For example, the first angle may comprise a 45 degree angle. Illustratively, auto-fixing actuation control 120 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 120 in a second fixed position within actuation control guide 210. In one or more embodiments, optic fiber 310 may comprise an optic fiber in a first curved position 510, e.g., when auto-fixing actuation control 120 is fixed in the second fixed position within actuation control guide 210.

FIG. 5C illustrates an optic fiber in a second curved position 520. In one or more embodiments, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to gradually curve optic fiber 310 from an optic fiber in a first curved position 510 to an optic fiber in a second curved position 520. Illustratively, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to extend actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, an extension of actuation mechanism 110 relative to handle proximal end 202 may be configured to extend housing tube 300 relative to optic fiber 310. Illustratively, a portion of optic fiber 310, e.g., a portion of optic fiber 310 fixed to housing tube 300, may be configured to resist an extension of housing tube 300 relative to optic fiber 310. In one or more embodiments, a portion of optic fiber 310 may be configured to apply a force to a portion of housing tube 300, e.g., to resist an extension of housing tube 300 relative to optic fiber 310. Illustratively, an application of a force to a portion of housing tube 300 may be configured to compress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a compression of a portion of housing tube 300 may cause housing tube 300 to gradually curve. Illustratively, a gradual curving of housing tube 300 may be configured to gradually curve optic fiber 310, e.g., from an optic fiber in a first curved position 510 to an optic fiber in a second curved position 520. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a second angle, e.g., when optic fiber 310 comprises an optic fiber in a second curved position 520. In one or more embodiments, the second angle may comprise any angle greater than the first angle. For example, the second angle may comprise a 90 degree angle. Illustratively, auto-fixing actuation control 120 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 120 in a third fixed position within actuation control guide 210. In one or more embodiments, optic fiber 310 may comprise an optic fiber in a second curved position 520, e.g., when auto-fixing actuation control 120 is fixed in the third fixed position within actuation control guide 210.

FIG. 5D illustrates an optic fiber in a third curved position 530. In one or more embodiments, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to gradually curve optic fiber 310 from an optic fiber in a second curved position 520 to an optic fiber in a third curved position 530. Illustratively, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to extend actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, an extension of actuation mechanism 110 relative to handle proximal end 202 may be configured to extend housing tube 300 relative to optic fiber 310. Illustratively, a portion of optic fiber 310, e.g., a portion of optic fiber 310 fixed to housing tube 300, may be configured to resist an extension of housing tube 300 relative to optic fiber 310. In one or more embodiments, a portion of optic fiber 310 may be configured to apply a force to a portion of housing tube 300, e.g., to resist an extension of housing tube 300 relative to optic fiber 310. Illustratively, an application of a force to a portion of housing tube 300 may be configured to compress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a compression of a portion of housing tube 300 may cause housing tube 300 to gradually curve. Illustratively, a gradual curving of housing tube 300 may be configured to gradually curve optic fiber 310, e.g., from an optic fiber in a second curved position 520 to an optic fiber in a third curved position 530. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a third angle, e.g., when optic fiber 310 comprises an optic fiber in a third curved position 530. In one or more embodiments, the third angle may comprise any angle greater than the second angle. For example, the third angle may comprise a 135 degree angle. Illustratively, auto-fixing actuation control 120 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 120 in a fourth fixed position within actuation control guide 210. In one or more embodiments, optic fiber 310 may comprise an optic fiber in a third curved position 530, e.g., when auto-fixing actuation control 120 is fixed in the fourth fixed position within actuation control guide 210.

FIG. 5E illustrates an optic fiber in a fourth curved position 540. In one or more embodiments, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to gradually curve optic fiber 310 from an optic fiber in a third curved position 530 to an optic fiber in a fourth curved position 540. Illustratively, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to extend actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, an extension of actuation mechanism 110 relative to handle proximal end 202 may be configured to extend housing tube 300 relative to optic fiber 310. Illustratively, a portion of optic fiber 310, e.g., a portion of optic fiber 310 fixed to housing tube 300, may be configured to resist an extension of housing tube 300 relative to optic fiber 310. In one or more embodiments, a portion of optic fiber 310 may be configured to apply a force to a portion of housing tube 300, e.g., to resist an extension of housing tube 300 relative to optic fiber 310. Illustratively, an application of a force to a portion of housing tube 300 may be configured to compress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a compression of a portion of housing tube 300 may cause housing tube 300 to gradually curve. Illustratively, a gradual curving of housing tube 300 may be configured to gradually curve optic fiber 310, e.g., from an optic fiber in a third curved position 530 to an optic fiber in a fourth curved position 540. In one or more embodiments, a line tangent to optic fiber distal end 311 may be parallel to a line tangent to housing tube proximal end 302, e.g., when optic fiber 310 comprises an optic fiber in a fourth curved position 540. Illustratively, auto-fixing actuation control 120 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 120 in a fifth fixed position within actuation control guide 210. In one or more embodiments, optic fiber 310 may comprise an optic fiber in a fourth curved position 540, e.g., when auto-fixing actuation control 120 is fixed in the fifth fixed position within actuation control guide 210.

In one or more embodiments, one or more properties of a steerable laser probe may be adjusted to attain one or more desired steerable laser probe features. Illustratively, a distance that housing tube distal end 301 extends from actuation mechanism distal end 111 may be adjusted to vary an amount of actuation of auto-fixing actuation control 120 configured to curve housing tube 300 to a particular curved position. In one or more embodiments, a stiffness of first housing tube portion 320 or a stiffness of second housing tube portion 330 may be adjusted to vary an amount of actuation of auto-fixing actuation control 120 configured to curve housing tube 300 to a particular curved position. Illustratively, a material comprising first housing tube portion 320 or a material comprising second housing tube portion 330 may be adjusted to vary an amount of actuation of auto-fixing actuation control 120 configured to curve housing tube 300 to a particular curved position.

In one or more embodiments, a number of apertures in housing tube 300 may be adjusted to vary an amount of actuation of auto-fixing actuation control 120 configured to curve housing tube 300 to a particular curved position. Illustratively, a location of one or more apertures in housing tube 300 may be adjusted to vary an amount of actuation of auto-fixing actuation control 120 configured to curve housing tube 300 to a particular curved position. In one or more embodiments, a geometry of one or more apertures in housing tube 300 may be adjusted to vary an amount of actuation of auto-fixing actuation control 120 configured to curve housing tube 300 to a particular curved position. Illustratively, a geometry of one or more apertures in housing tube 300 may be uniform, e.g., each aperture of the one or more apertures may have a same geometry. In one or more embodiments, a geometry of one or more apertures in housing tube 300 may be non-uniform, e.g., a first aperture in housing tube 300 may have a first geometry and a second aperture in housing tube 300 may have a second geometry. Illustratively, a geometry or location of one or more apertures in housing tube 300 may be optimized to evenly distribute an applied force. For example, a geometry or location of one or more apertures in housing tube 300 may be optimized to evenly distribute a force applied to first housing tube portion 320.

Illustratively, a stiffness of first housing tube portion 320 or a stiffness of second housing tube portion 330 may be adjusted to vary a bend radius of housing tube 300. In one or more embodiments, a stiffness of first housing tube portion 320 or a stiffness of second housing tube portion 330 may be adjusted to vary a radius of curvature of housing tube 300, e.g., when housing tube 300 is in a particular curved position. Illustratively, a number of apertures in housing tube 300 may be adjusted to vary a bend radius of housing tube 300. In one or more embodiments, a number of apertures in housing tube 300 may be adjusted to vary a radius of curvature of housing tube 300, e.g., when housing tube 300 is in a particular curved position. Illustratively, a location or a geometry of one or more apertures in housing tube 300 may be adjusted to vary a bend radius of housing tube 300. In one or more embodiments, a location or a geometry of one or more apertures in housing tube 300 may be adjusted to vary a radius of curvature of housing tube 300, e.g., when housing tube 300 is in a particular curved position.

In one or more embodiments, at least a portion of optic fiber 310 may be enclosed in an optic fiber sleeve configured to, e.g., protect optic fiber 310, vary a stiffness of optic fiber 310, vary an optical property of optic fiber 310, etc. Illustratively, an optic fiber sleeve may be configured to compress a portion of housing tube 300, e.g., first housing tube portion 320. For example, an optic fiber sleeve may be disposed over a portion of optic fiber 310 fixed within optic fiber housing 160 and the optic fiber sleeve may be disposed over a portion of optic fiber 310 fixed to a portion of housing tube 300. In one or more embodiments, an extension of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to extend housing tube 300 relative to the optic fiber sleeve. Illustratively, an extension of housing tube 300 relative to the optic fiber sleeve may cause the optic fiber sleeve to apply a force to a portion of housing tube 300, e.g., first housing tube portion 320. Illustratively, an application of a force to a portion of housing tube 300 may be configured to compress a portion of housing tube 300 causing housing tube 300 to gradually curve.

Illustratively, optic fiber 310 may comprise a buffer, a cladding disposed in the buffer, and a core disposed in the cladding. In one or more embodiments, at least a portion of optic fiber 310 may comprise a buffer configured to protect an optical property of optic fiber 310. Illustratively, at least a portion of optic fiber 310 may comprise a buffer configured to protect an optical layer of optic fiber 310, e.g., the buffer may protect an optical layer of a curved portion of optic fiber 310. In one or more embodiments, at least a portion of optic fiber 310 may comprise a polyimide buffer configured to protect an optical property of optic fiber 310. For example, at least a portion of optic fiber 310 may comprise a Kapton buffer configured to protect an optical property of optic fiber 310.

Illustratively, a steerable laser probe may be configured to indicate, e.g., to a surgeon, a direction that optic fiber 310 may curve, e.g., due to an actuation of auto-fixing actuation control 120 within actuation control guide 210. In one or more embodiments, a portion of a steerable laser probe, e.g., handle 200, may be marked in a manner configured to indicate a direction that optic fiber 310 may curve. For example, a portion of housing tube 300 may comprise a mark configured to indicate a direction that optic fiber 310 may curve. Illustratively, housing tube 300 may comprise a slight curve, e.g., a curve less than 7.5 degrees, when auto-fixing actuation control 120 is fully retracted relative to actuation control guide proximal end 212. For example, housing tube 300 may comprise a slight curve, e.g., a curve greater than 7.5 degrees, when auto-fixing actuation control 120 is fully retracted relative to actuation control guide proximal end 212. In one or more embodiments, housing tube 300 may comprise a slight curve configured to indicate a direction that optic fiber 310 may curve, e.g., due to an actuation of auto-fixing actuation control 120 within actuation control guide 210.

FIGS. 6A, 6B, 6C, 6D, and 6E are schematic diagrams illustrating a gradual straightening of an optic fiber 310. FIG. 6A illustrates a fully curved optic fiber 600. In one or more embodiments, optic fiber 310 may comprise a fully curved optic fiber 600, e.g., when auto-fixing actuation control 120 is fully extended relative to actuation control guide proximal end 212. Illustratively, optic fiber 310 may comprise a fully curved optic fiber 600, e.g., when actuation mechanism 110 is fully extended relative to handle proximal end 202. For example, optic fiber 310 may comprise a fully curved optic fiber 600, e.g., when first housing tube portion 320 is fully compressed. In one or more embodiments, a line tangent to optic fiber distal end 311 may be parallel to a line tangent to housing tube proximal end 302, e.g., when optic fiber 310 comprises a fully curved optic fiber 600.

FIG. 6B illustrates an optic fiber in a first partially straightened position 610. In one or more embodiments, a retraction of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to gradually straighten optic fiber 310 from a fully curved optic fiber 600 to an optic fiber in a first partially straightened position 610. Illustratively, a retraction of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to retract actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, a retraction of actuation mechanism 110 relative to handle proximal end 202 may be configured to retract housing tube 300 relative to optic fiber 310. Illustratively, a portion of optic fiber 310, e.g., a portion of optic fiber 310 fixed to housing tube 300, may be configured to facilitate a retraction of housing tube 300 relative to optic fiber 310. In one or more embodiments, a portion of optic fiber 310 may be configured to reduce a force applied to a portion of housing tube 300, e.g., due to a retraction of housing tube 300 relative to optic fiber 310. Illustratively, a reduction of a force applied to a portion of housing tube 300 may be configured to decompress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a decompression of a portion of housing tube 300 may cause housing tube 300 to gradually straighten. Illustratively, a gradual straightening of housing tube 300 may be configured to gradually straighten optic fiber 310, e.g., from a fully curved optic fiber 600 to an optic fiber in a first partially straightened position 610. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a first partially straightened angle, e.g., when optic fiber 310 comprises an optic fiber in a first partially straightened position 610. Illustratively, the first partially straightened angle may comprise any angle less than 180 degrees. For example, the first partially straightened angle may comprise a 135 degree angle.

FIG. 6C illustrates an optic fiber in a second partially straightened position 620. In one or more embodiments, a retraction of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to gradually straighten optic fiber 310 from an optic fiber in a first partially straightened position 610 to an optic fiber in a second partially straightened position 620. Illustratively, a retraction of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to retract actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, a retraction of actuation mechanism 110 relative to handle proximal end 202 may be configured to retract housing tube 300 relative to optic fiber 310. Illustratively, a portion of optic fiber 310, e.g., a portion of optic fiber 310 fixed to housing tube 300, may be configured to facilitate a retraction of housing tube 300 relative to optic fiber 310. In one or more embodiments, a portion of optic fiber 310 may be configured to reduce a force applied to a portion of housing tube 300, e.g., due to a retraction of housing tube 300 relative to optic fiber 310. Illustratively, a reduction of a force applied to a portion of housing tube 300 may be configured to decompress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a decompression of a portion of housing tube 300 may cause housing tube 300 to gradually straighten. Illustratively, a gradual straightening of housing tube 300 may be configured to gradually straighten optic fiber 310, e.g., from an optic fiber in a first partially straightened position 610 to an optic fiber in a second partially straightened position 620. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a second partially straightened angle, e.g., when optic fiber 310 comprises an optic fiber in a second partially straightened position 620. Illustratively, the second partially straightened angle may comprise any angle less than the first partially straightened angle. For example, the second partially straightened angle may comprise a 90 degree angle.

FIG. 6D illustrates an optic fiber in a third partially straightened position 630. In one or more embodiments, a retraction of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to gradually straighten optic fiber 310 from an optic fiber in a second partially straightened position 620 to an optic fiber in a third partially straightened position 630. Illustratively, a refraction of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to retract actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, a retraction of actuation mechanism 110 relative to handle proximal end 202 may be configured to retract housing tube 300 relative to optic fiber 310. Illustratively, a portion of optic fiber 310, e.g., a portion of optic fiber 310 fixed to housing tube 300, may be configured to facilitate a retraction of housing tube 300 relative to optic fiber 310. In one or more embodiments, a portion of optic fiber 310 may be configured to reduce a force applied to a portion of housing tube 300, e.g., due to a retraction of housing tube 300 relative to optic fiber 310. Illustratively, a reduction of a force applied to a portion of housing tube 300 may be configured to decompress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a decompression of a portion of housing tube 300 may cause housing tube 300 to gradually straighten. Illustratively, a gradual straightening of housing tube 300 may be configured to gradually straighten optic fiber 310, e.g., from an optic fiber in a second partially straightened position 620 to an optic fiber in a third partially straightened position 630. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a third partially straightened angle, e.g., when optic fiber 310 comprises an optic fiber in a third partially straightened position 630. Illustratively, the third partially straightened angle may comprise any angle less than the second partially straightened angle. For example, the third partially straightened angle may comprise a 45 degree angle.

FIG. 6E illustrates an optic fiber in a fully straightened position 640. In one or more embodiments, a retraction of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to gradually straighten optic fiber 310 from an optic fiber in a third partially straightened position 630 to an optic fiber in a fully straightened position 640. Illustratively, a retraction of auto-fixing actuation control 120 relative to actuation control guide proximal end 212 may be configured to retract actuation mechanism 110 relative to handle proximal end 202. In one or more embodiments, a refraction of actuation mechanism 110 relative to handle proximal end 202 may be configured to retract housing tube 300 relative to optic fiber 310. Illustratively, a portion of optic fiber 310, e.g., a portion of optic fiber 310 fixed to housing tube 300, may be configured to facilitate a retraction of housing tube 300 relative to optic fiber 310. In one or more embodiments, a portion of optic fiber 310 may be configured to reduce a force applied to a portion of housing tube 300, e.g., due to a retraction of housing tube 300 relative to optic fiber 310. Illustratively, a reduction of a force applied to a portion of housing tube 300 may be configured to decompress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a decompression of a portion of housing tube 300 may cause housing tube 300 to gradually straighten. Illustratively, a gradual straightening of housing tube 300 may be configured to gradually straighten optic fiber 310, e.g., from an optic fiber in a third partially straightened position 630 to an optic fiber in a fully straightened position 640. In one or more embodiments, a line tangent to optic fiber distal end 311 may be parallel to a line tangent to housing tube proximal end 302, e.g., when optic fiber 310 comprises an optic fiber in a fully straightened position 640.

Illustratively, a surgeon may aim optic fiber distal end 311 at any of a plurality of targets within an eye, e.g., to perform a photocoagulation procedure, to illuminate a surgical target site, etc. In one or more embodiments, a surgeon may aim optic fiber distal end 311 at any target within a particular transverse plane of the inner eye by, e.g., rotating handle 200 to orient housing tube 300 in an orientation configured to cause a curvature of housing tube 300 within the particular transverse plane of the inner eye and varying an amount of actuation of auto-fixing actuation control 120 within actuation control guide 210. Illustratively, a surgeon may aim optic fiber distal end 311 at any target within a particular sagittal plane of the inner eye by, e.g., rotating handle 200 to orient housing tube 300 in an orientation configured to cause a curvature of housing tube 300 within the particular sagittal plane of the inner eye and varying an amount of actuation of auto-fixing actuation control 120 within actuation control guide 210. In one or more embodiments, a surgeon may aim optic fiber distal end 311 at any target within a particular frontal plane of the inner eye by, e.g., varying an amount of actuation of auto-fixing actuation control 120 within actuation control guide 210 to orient a line tangent to optic fiber distal end 311 wherein the line tangent to optic fiber distal end 311 is within the particular frontal plane of the inner eye and rotating handle 200. Illustratively, a surgeon may aim optic fiber distal end 311 at any target located outside of the particular transverse plane, the particular sagittal plane, and the particular frontal plane of the inner eye, e.g., by varying a rotational orientation of handle 200 and varying an amount of actuation of auto-fixing actuation control 120 within actuation control guide 210. In one or more embodiments, a surgeon may aim optic fiber distal end 311 at any target of a plurality of targets within an eye, e.g., without increasing a length of a portion of a steerable laser probe within the eye. Illustratively, a surgeon may aim optic fiber distal end 311 at any target of a plurality of targets within an eye, e.g., without decreasing a length of a portion of a steerable laser probe within the eye.

FIGS. 7A and 7B are schematic diagrams illustrating an exploded view of a handle assembly 700. FIG. 7A illustrates a side view of a handle assembly 700. Illustratively, a handle assembly 700 may comprise a handle end cap 705 having a handle end cap distal end 706 and a handle end cap proximal end 707, an actuation mechanism 710 having an actuation mechanism distal end 711 and an actuation mechanism proximal end 712, an auto-fixing actuation control 720 having an auto-fixing actuation control distal end 721 and an auto-fixing actuation control proximal end 722, a handle base 730 having a handle base distal end 731 and a handle base proximal end 732, a handle end cap interface 735, an auto-fixing component housing 740, and a handle base channel 745.

FIG. 7B illustrates a cross-sectional view of a handle assembly 700. In one or more embodiments, a handle assembly 700 may comprise an actuation mechanism guide 750, a handle base housing 755, a handle base interface 756, an cable housing 760, an inner bore 770, a housing tube housing 775, a distal chamber 780, and a housing tube guide 790. Illustratively, handle end cap 705, actuation mechanism 710, auto-fixing actuation control 720, and handle base 730 may be manufactured from any suitable material, e.g., polymers, metals, metal alloys, etc., or from any combination of suitable materials.

FIGS. 8A and 8B are schematic diagrams illustrating a handle 800. FIG. 8A illustrates a side view of a handle 800. Illustratively, handle 800 may comprise a handle distal end 801 and a handle proximal end 802. In one or more embodiments, handle 800 may comprise an actuation control guide 810 having an actuation control guide distal end 811 and an actuation control guide proximal end 812. Illustratively, handle 800 may be manufactured from any suitable material, e.g., polymers, metals, metal alloys, etc., or from any combination of suitable materials.

FIG. 8B illustrates a cross-sectional view of a handle 800. Illustratively, actuation mechanism 710 may be disposed within handle end cap 705 and handle base 730. In one or more embodiments, a portion of handle base 730 may be disposed within handle base housing 755, e.g., handle base proximal end 732 may be disposed within handle base housing 755. Illustratively, handle base 730 may be disposed within handle base housing 755, e.g., handle base proximal end 732 may interface with handle base interface 756. For example, handle base 730 may be disposed within end cap 705 wherein end cap distal end 706 may interface with handle end cap interface 735. In one or more embodiments, handle base 730 may be fixed within handle base housing 755, e.g., by an adhesive or any suitable fixation means. For example, handle base 730 may be fixed within handle base housing 755 by a press fit, a setscrew, a weld, etc. Illustratively, handle base 730 and handle end cap 705 may be manufactured as a single unit.

In one or more embodiments, auto-fixing actuation control 720 may be disposed within actuation control guide 810. For example, auto-fixing actuation control 720 may be disposed within actuation control guide 810 wherein auto-fixing actuation control 720 is adjacent to auto-fixing component housing 740. Illustratively, actuation control guide 810 may comprise a portion of handle base channel 745. In one or more embodiments, handle end cap distal end 706 may comprise actuation control guide proximal end 812. Illustratively, auto-fixing actuation control 720 may be configured to actuate within actuation control guide 810. In one or more embodiments, actuation mechanism 710 may be configured to actuate within actuation mechanism guide 750. Illustratively, an actuation of auto-fixing actuation control 720 may be configured to actuate actuation mechanism 710. In one or more embodiments, an actuation of auto-fixing actuation control 720 within actuation control guide 810 may be configured to actuate actuation mechanism 710 within actuation mechanism guide 750.

Illustratively, an actuation of auto-fixing actuation control 720 within actuation control guide 810, e.g., away from actuation control guide proximal end 812 and towards actuation control guide distal end 811, may be configured to actuate actuation mechanism 710 within actuation mechanism guide 750, e.g., away from handle proximal end 802 and towards handle distal end 801. In one or more embodiments, an extension of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to extend actuation mechanism 710 relative to handle proximal end 802. Illustratively, an extension of actuation mechanism 710 relative to handle proximal end 802 may be configured to extend housing tube housing 775 relative to handle proximal end 802.

In one or more embodiments, an actuation of auto-fixing actuation control 720 within actuation control guide 810, e.g., away from actuation control guide distal end 811 and towards actuation control guide proximal end 812 may be configured to actuate actuation mechanism 710 within actuation mechanism guide 750, e.g., towards handle proximal end 802 and away from handle distal end 801. Illustratively, a retraction of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to retract actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, a retraction of actuation mechanism 710 relative to handle proximal end 802 may be configured to retract housing tube housing 775 relative to handle proximal end 802.

FIG. 9 is a schematic diagram illustrating a housing tube 300. Illustratively, an optic fiber 310 may be disposed within housing tube 300. In one or more embodiments, optic fiber 310 may comprise an optic fiber distal end 311 and an optic fiber proximal end 312. Illustratively, optic fiber 310 may be configured to transmit light, e.g., laser light, illumination light, etc. In one or more embodiments, optic fiber 310 may be disposed within housing tube 300 wherein optic fiber distal end 311 may be adjacent to housing tube distal end 301. Illustratively, optic fiber 310 may be disposed within housing tube 300 wherein a portion of optic fiber 310 may be adjacent to a portion of first housing tube portion 320. In one or more embodiments, a portion of optic fiber 310 may be fixed to an inner portion of housing tube 300, e.g., by an adhesive or any suitable fixation means.

Illustratively, a cable 910 may be disposed in housing tube 300. In one or more embodiments, cable 910 may comprise a cable distal end 911 and a cable proximal end 912. In one or more embodiments, cable 910 may be disposed within housing tube 300 wherein cable distal end 911 may be adjacent to housing tube distal end 301. Illustratively, cable 910 may be disposed within housing tube 300 wherein a portion of cable 910 may be adjacent to a portion of first housing tube portion 320. In one or more embodiments, a portion of cable 910 may be fixed to a portion of housing tube 300, e.g., by an adhesive or any suitable fixation means. For example, cable 810 may be fixed to a portion of housing tube 300 by a weld, a mechanical means, a tie, etc.

FIG. 10 is a schematic diagram illustrating an exploded view of a steerable laser probe assembly 1000. In one or more embodiments, a steerable laser probe assembly 1000 may comprise a handle 800, a housing tube 300 having a housing tube distal end 301 and a housing tube proximal end 302, an optic fiber 310 having an optic fiber distal end 311 and an optic fiber proximal end 312, a cable 910 having a cable distal end 911 and a cable proximal end 912, an auto-fixing component 420 having an auto-fixing component distal end 421 and an auto-fixing component proximal end 422, and a light source interface 410. Illustratively, light source interface 410 may be configured to interface with optic fiber 310, e.g., at optic fiber proximal end 312. In one or more embodiments, light source interface 410 may comprise a standard light source connecter, e.g., an SMA connector.

Illustratively, housing tube 300 may be disposed within housing tube housing 775, actuation mechanism guide 750, and housing tube guide 790. In one or more embodiments, a portion of housing tube 300 may be fixed within housing tube housing 775, e.g., housing tube proximal end 302 may be fixed within housing tube housing 775. Illustratively, a portion of housing tube 300 may be fixed within housing tube housing 775, e.g., by an adhesive or any suitable fixation means. For example, a portion of housing tube 300 may be fixed within housing tube housing 775 by a press fit, a set screw, etc. In one or more embodiments, housing tube 300 may be fixed within housing tube housing 775 wherein housing tube distal end 301 extends from handle distal end 801.

Illustratively, optic fiber 310 may be disposed within cable housing 760, actuation mechanism guide 750, inner bore 770, housing tube 300, and housing tube guide 790. In one or more embodiments, optic fiber 310 may be disposed within housing tube 300 wherein optic fiber distal end 311 may be adjacent to housing tube distal end 301. Illustratively, a portion of optic fiber 310 may be fixed within housing tube 300, e.g., by an adhesive or any suitable fixation means. In one or more embodiments, cable 910 may be disposed within cable housing 760, actuation mechanism guide 750, inner bore 770, housing tube 300, and housing tube guide 790. Illustratively, cable 910 may be disposed within housing tube 300 wherein cable distal end 911 may be adjacent to housing tube distal end 301. In one or more embodiments, a portion of cable 910 may be fixed to a portion of housing tube 300, e.g., by an adhesive or any suitable fixation means. For example, cable 910 may be fixed to a portion of housing tube 300 by a weld, a tie, a setscrew, etc. Illustratively, a portion of cable 910 may be fixed within cable housing 760, e.g., cable proximal end 912 may be fixed within cable housing 760. In one or more embodiments, a portion of cable 910 may be fixed within cable housing 760, e.g., by an adhesive or any suitable fixation means. For example, cable 910 may be fixed within cable housing 760 by a weld, a tie, a setscrew, etc. Illustratively, a first portion of cable 910 may be fixed within cable housing 760 and a second portion of cable 910 may be fixed to a portion of housing tube 300.

In one or more embodiments, an actuation of auto-fixing actuation control 720 within actuation control guide 810, e.g., towards actuation control guide distal end 811 and away from actuation control guide proximal end 812, may be configured to actuate actuation mechanism 710 within actuation mechanism guide 750, e.g., towards handle distal end 801 and away from handle proximal end 802. Illustratively, an extension of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to extend actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, an extension of actuation mechanism 710 relative to handle proximal end 802 may be configured to extend housing tube housing 775 relative to handle proximal end 802. Illustratively, an extension of housing tube housing 775 relative to handle proximal end 802 may be configured to extend housing tube 300 relative to handle proximal end 802. In one or more embodiments, an extension of housing tube 300 relative to handle proximal end 802 may be configured to extend housing tube 300 relative to cable 910. Illustratively, a portion of cable 910, e.g., a portion of cable 910 fixed to housing tube 300, may be configured to resist an extension of housing tube 300 relative to optic cable 910. In one or more embodiments, a portion of cable 910 may be configured to prevent housing tube 300 from extending relative to cable 910. Illustratively, an extension of housing tube 300 relative to cable 910 may be configured to apply a force to a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, an application of a force to a portion of housing tube 300, e.g., first housing tube portion 320, may be configured to compress a portion of housing tube 300. Illustratively, a compression of a portion of housing tube 300 may be configured to cause housing tube 300 to gradually curve. In one or more embodiments, a gradual curving of housing tube 300 may be configured to gradually curve optic fiber 310.

In one or more embodiments, an actuation of auto-fixing actuation control 720 within actuation control guide 810, e.g., towards actuation control guide proximal end 812 and away from actuation control guide distal end 811, may be configured to actuate actuation mechanism 710 within actuation mechanism guide 750, e.g., towards handle proximal end 802 and away from handle distal end 801. Illustratively, a retraction of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to retract actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, a retraction of actuation mechanism 710 relative to handle proximal end 802 may be configured to retract housing tube housing 775 relative to handle proximal end 802. Illustratively, a retraction of housing tube housing 775 relative to handle proximal end 802 may be configured to retract housing tube 300 relative to handle proximal end 802. In one or more embodiments, a retraction of housing tube 300 relative to handle proximal end 802 may be configured to retract housing tube 300 relative to cable 910. Illustratively, a portion of cable 910, e.g., a portion of cable 910 fixed to housing tube 300, may be configured to facilitate a retraction of housing tube 300 relative to cable 910. In one or more embodiments, a retraction of housing tube 300 relative to cable 910 may be configured to reduce a force applied to a portion of housing tube 300, e.g., first housing tube portion 320. Illustratively, a reduction of a force applied to a portion of housing tube 300, e.g., first housing tube portion 320, may be configured to decompress a portion of housing tube 300. In one or more embodiments, a decompression of a portion of housing tube 300 may be configured to cause housing tube 300 to gradually straighten. Illustratively, a gradual straightening of housing tube 300 may be configured to gradually straighten optic fiber 310.

In one or more embodiments, auto-fixing component 420 may be disposed within auto-fixing component housing 740. Illustratively, auto-fixing component 420 may be fixed within auto-fixing component housing 740, e.g., by an adhesive or any suitable fixation means. In one or more embodiments, auto-fixing component 420 may be disposed within auto-fixing component housing 740 wherein a portion of auto-fixing component 420 may be adjacent to a portion of auto-fixing actuation control 720. Illustratively, auto-fixing component 420 may be configured to produce a magnetic field, e.g., auto-fixing component 420 may comprise a permanent magnet. In one or more embodiments, auto-fixing component 420 may comprise a ferromagnetic material, e.g., auto-fixing component 420 may comprise a ferrimagnetic material. Illustratively, auto-fixing actuation control 720 may be configured to produce a magnetic field, e.g., auto-fixing actuation control 720 may comprise a permanent magnetic. In one or more embodiments, auto-fixing actuation control 720 may comprise a ferromagnetic material, e.g., auto-fixing actuation control 720 may comprise a ferrimagnetic material. Illustratively, auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 720 in a position within actuation control guide 810, e.g., a magnetic force attracting auto-fixing actuation control 720 to auto-fixing component 420 may be configured to hold auto-fixing actuation control 720 fixed in a position within actuation control guide 810. In one or more embodiments, auto-fixing actuation control 720 may be configured to temporarily fix auto-fixing actuation control 720 in a position within actuation control guide 810, e.g., a magnetic force attracting auto-fixing component 420 to auto-fixing actuation control 720 may be configured to temporarily hold auto-fixing actuation control 720 fixed in a position within actuation control guide 810. Illustratively, both auto-fixing component 420 and auto-fixing actuation control 720 may be configured to temporarily fix auto-fixing actuation control 720 in a position within actuation control guide 210, e.g., auto-fixing component 420 and auto-fixing actuation control 720 may both comprise permanent magnets having poles oriented to attract auto-fixing component 420 to auto-fixing actuation control 720 and to attract auto-fixing actuation control 720 to auto-fixing component 420.

In one or more embodiments, a surgeon may actuate auto-fixing actuation control 720 within actuation control guide 810, e.g., by applying a force to a portion of auto-fixing actuation control 720 until auto-fixing actuation control 720 is in a first desired position within actuation control guide 810. Illustratively, the surgeon may then remove the force applied to auto-fixing actuation control 720 and perform a portion of a surgical procedure, e.g., auto-fixing actuation control 720 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 720 in the first desired position within actuation control guide 810. In one or more embodiments, the surgeon may actuate auto-fixing actuation control 720 within actuation control guide 810, e.g., by applying a force to a portion of auto-fixing actuation control 720 until auto-fixing actuation control 720 is in a second desired position within actuation control guide 810. Illustratively, the surgeon may then remove the force applied to auto-fixing actuation control 720 and perform a portion of a surgical procedure, e.g., auto-fixing actuation control 720 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 720 in the second desired position within actuation control guide 810. In one or more embodiments, the surgeon may actuate auto-fixing actuation control 720 within actuation control guide 810, e.g., by applying a force to a portion of auto-fixing actuation control 720 until auto-fixing actuation control 720 is in a third desired position within actuation control guide 810. Illustratively, the surgeon may then remove the force applied to auto-fixing actuation control 720 and perform a portion of a surgical procedure, e.g., auto-fixing actuation control 720 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 720 in the third desired position within actuation control guide 810. In one or more embodiments, auto-fixing actuation control 720 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 720 in any desired position within actuation control guide 810.

FIGS. 11A, 11B, 11C, 11D, and 11E are schematic diagrams illustrating a gradual curving of an optic fiber 310. FIG. 11A illustrates a straight optic fiber 1100. In one or more embodiments, optic fiber 310 may comprise a straight optic fiber 1100, e.g., when housing tube 300 is fully retracted relative to cable 910. Illustratively, optic fiber 310 may comprise a straight optic fiber 1100, e.g., when auto-fixing actuation control 720 is fully retracted relative to actuation control guide proximal end 812. In one or more embodiments, optic fiber 310 may comprise a straight optic fiber 1100, e.g., when actuation mechanism 710 is fully retracted relative to handle proximal end 802. For example, optic fiber 310 may comprise a straight optic fiber 1100, e.g., when first housing tube portion 320 is fully decompressed. Illustratively, a line tangent to optic fiber distal end 311 may be parallel to a line tangent to housing tube proximal end 302, e.g., when optic fiber 310 comprises a straight optic fiber 1100. In one or more embodiments, auto-fixing actuation control 720 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 720 in a first fixed position within actuation control guide 810. Illustratively, optic fiber 310 may comprise a straight optic fiber 1100, e.g., when auto-fixing actuation control 720 is fixed in the first fixed position within actuation control guide 810.

FIG. 11B illustrates an optic fiber in a first curved position 1110. In one or more embodiments, an extension of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to gradually curve optic fiber 310 from a straight optic fiber 1100 to an optic fiber in a first curved position 1110. Illustratively, an extension of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to extend actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, an extension of actuation mechanism 710 relative to handle proximal end 802 may be configured to extend housing tube 300 relative to cable 910. Illustratively, a portion of cable 910, e.g., a portion of cable 910 fixed to housing tube 300, may be configured to resist an extension of housing tube 300 relative to cable 910. In one or more embodiments, a portion of cable 910 may be configured to apply a force to a portion of housing tube 300, e.g., to resist an extension of housing tube 300 relative to cable 910. Illustratively, an application of a force to a portion of housing tube 300 may be configured to compress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a compression of a portion of housing tube 300 may cause housing tube 300 to gradually curve. Illustratively, a gradual curving of housing tube 300 may be configured to gradually curve optic fiber 310, e.g., from a straight optic fiber 1100 to an optic fiber in a first curved position 1110. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a first angle, e.g., when optic fiber 310 comprises an optic fiber in a first curved position 1110. In one or more embodiments, the first angle may comprise any angle greater than zero degrees. For example, the first angle may comprise a 45 degree angle. Illustratively, auto-fixing actuation control 720 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 720 in a second fixed position within actuation control guide 810. In one or more embodiments, optic fiber 310 may comprise an optic fiber in a first curved position 1110, e.g., when auto-fixing actuation control 720 is fixed in the second fixed position within actuation control guide 810.

FIG. 11C illustrates an optic fiber in a second curved position 1120. In one or more embodiments, an extension of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to gradually curve optic fiber 310 from an optic fiber in a first curved position 1110 to an optic fiber in a second curved position 1120. Illustratively, an extension of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to extend actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, an extension of actuation mechanism 710 relative to handle proximal end 802 may be configured to extend housing tube 300 relative to cable 910. Illustratively, a portion of cable 910, e.g., a portion of cable 910 fixed to housing tube 300, may be configured to resist an extension of housing tube 300 relative to cable 910. In one or more embodiments, a portion of cable 910 may be configured to apply a force to a portion of housing tube 300, e.g., to resist an extension of housing tube 300 relative to cable 910. Illustratively, an application of a force to a portion of housing tube 300 may be configured to compress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a compression of a portion of housing tube 300 may cause housing tube 300 to gradually curve. Illustratively, a gradual curving of housing tube 300 may be configured to gradually curve optic fiber 310, e.g., from an optic fiber in a first curved position 1110 to an optic fiber in a second curved position 1120. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a second angle, e.g., when optic fiber 310 comprises an optic fiber in a second curved position 1120. In one or more embodiments, the second angle may comprise any angle greater than the first angle. For example, the second angle may comprise a 90 degree angle. Illustratively, auto-fixing actuation control 720 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 720 in a third fixed position within actuation control guide 810. In one or more embodiments, optic fiber 310 may comprise an optic fiber in a second curved position 1120, e.g., when auto-fixing actuation control 720 is fixed in the third fixed position within actuation control guide 810.

FIG. 11D illustrates an optic fiber in a third curved position 1130. In one or more embodiments, an extension of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to gradually curve optic fiber 310 from an optic fiber in a second curved position 1120 to an optic fiber in a third curved position 1130. Illustratively, an extension of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to extend actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, an extension of actuation mechanism 710 relative to handle proximal end 802 may be configured to extend housing tube 300 relative to cable 910. Illustratively, a portion of cable 910, e.g., a portion of cable 910 fixed to housing tube 300, may be configured to resist an extension of housing tube 300 relative to cable 910. In one or more embodiments, a portion of cable 910 may be configured to apply a force to a portion of housing tube 300, e.g., to resist an extension of housing tube 300 relative to cable 910. Illustratively, an application of a force to a portion of housing tube 300 may be configured to compress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a compression of a portion of housing tube 300 may cause housing tube 300 to gradually curve. Illustratively, a gradual curving of housing tube 300 may be configured to gradually curve optic fiber 310, e.g., from an optic fiber in a second curved position 1120 to an optic fiber in a third curved position 1130. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a third angle, e.g., when optic fiber 310 comprises an optic fiber in a third curved position 1130. In one or more embodiments, the third angle may comprise any angle greater than the second angle. For example, the third angle may comprise a 135 degree angle. Illustratively, auto-fixing actuation control 720 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 720 in a fourth fixed position within actuation control guide 810. In one or more embodiments, optic fiber 310 may comprise an optic fiber in a third curved position 1130, e.g., when auto-fixing actuation control 720 is fixed in the fourth fixed position within actuation control guide 810.

FIG. 11E illustrates an optic fiber in a fourth curved position 1140. In one or more embodiments, an extension of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to gradually curve optic fiber 310 from an optic fiber in a third curved position 1130 to an optic fiber in a fourth curved position 1140. Illustratively, an extension of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to extend actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, an extension of actuation mechanism 710 relative to handle proximal end 802 may be configured to extend housing tube 300 relative to cable 910. Illustratively, a portion of cable 910, e.g., a portion of cable 910 fixed to housing tube 300, may be configured to resist an extension of housing tube 300 relative to cable 910. In one or more embodiments, a portion of cable 910 may be configured to apply a force to a portion of housing tube 300, e.g., to resist an extension of housing tube 300 relative to cable 910. Illustratively, an application of a force to a portion of housing tube 300 may be configured to compress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a compression of a portion of housing tube 300 may cause housing tube 300 to gradually curve. Illustratively, a gradual curving of housing tube 300 may be configured to gradually curve optic fiber 310, e.g., from an optic fiber in a third curved position 1130 to an optic fiber in a fourth curved position 1140. In one or more embodiments, a line tangent to optic fiber distal end 311 may be parallel to a line tangent to housing tube proximal end 302, e.g., when optic fiber 310 comprises an optic fiber in a fourth curved position 1140. Illustratively, auto-fixing actuation control 720 and auto-fixing component 420 may be configured to temporarily fix auto-fixing actuation control 720 in a fifth fixed position within actuation control guide 810. In one or more embodiments, optic fiber 310 may comprise an optic fiber in a fourth curved position 1140, e.g., when auto-fixing actuation control 720 is fixed in the fifth fixed position within actuation control guide 810.

In one or more embodiments, one or more properties of a steerable laser probe may be adjusted to attain one or more desired steerable laser probe features. Illustratively, a distance that housing tube distal end 301 extends from actuation mechanism distal end 711 may be adjusted to vary an amount of actuation of auto-fixing actuation control 720 configured to curve housing tube 300 to a particular curved position. In one or more embodiments, a stiffness of first housing tube portion 320 or a stiffness of second housing tube portion 330 may be adjusted to vary an amount of actuation of auto-fixing actuation control 720 configured to curve housing tube 300 to a particular curved position. Illustratively, a material comprising first housing tube portion 320 or a material comprising second housing tube portion 330 may be adjusted to vary an amount of actuation of auto-fixing actuation control 720 configured to curve housing tube 300 to a particular curved position.

In one or more embodiments, a number of apertures in housing tube 300 may be adjusted to vary an amount of actuation of auto-fixing actuation control 720 configured to curve housing tube 300 to a particular curved position. Illustratively, a location of one or more apertures in housing tube 300 may be adjusted to vary an amount of actuation of auto-fixing actuation control 720 configured to curve housing tube 300 to a particular curved position. In one or more embodiments, a geometry of one or more apertures in housing tube 300 may be adjusted to vary an amount of actuation of auto-fixing actuation control 720 configured to curve housing tube 300 to a particular curved position. Illustratively, a geometry of one or more apertures in housing tube 300 may be uniform, e.g., each aperture of the one or more apertures may have a same geometry. In one or more embodiments, a geometry of one or more apertures in housing tube 300 may be non-uniform, e.g., a first aperture in housing tube 300 may have a first geometry and a second aperture in housing tube 300 may have a second geometry. Illustratively, a geometry or location of one or more apertures in housing tube 300 may be optimized to evenly distribute an applied force. For example, a geometry or location of one or more apertures in housing tube 300 may be optimized to evenly distribute a force applied to first housing tube portion 320.

Illustratively, a stiffness of first housing tube portion 320 or a stiffness of second housing tube portion 330 may be adjusted to vary a bend radius of housing tube 300. In one or more embodiments, a stiffness of first housing tube portion 320 or a stiffness of second housing tube portion 330 may be adjusted to vary a radius of curvature of housing tube 300, e.g., when housing tube 300 is in a particular curved position. Illustratively, a number of apertures in housing tube 300 may be adjusted to vary a bend radius of housing tube 300. In one or more embodiments, a number of apertures in housing tube 300 may be adjusted to vary a radius of curvature of housing tube 300, e.g., when housing tube 300 is in a particular curved position. Illustratively, a location or a geometry of one or more apertures in housing tube 300 may be adjusted to vary a bend radius of housing tube 300. In one or more embodiments, a location or a geometry of one or more apertures in housing tube 300 may be adjusted to vary a radius of curvature of housing tube 300, e.g., when housing tube 300 is in a particular curved position.

In one or more embodiments, at least a portion of optic fiber 310 may be enclosed in an optic fiber sleeve configured to, e.g., protect optic fiber 310, vary a stiffness of optic fiber 310, vary an optical property of optic fiber 310, etc. Illustratively, optic fiber 310 may comprise a buffer, a cladding disposed in the buffer, and a core disposed in the cladding. In one or more embodiments, at least a portion of optic fiber 310 may comprise a buffer configured to protect an optical property of optic fiber 310. Illustratively, at least a portion of optic fiber 310 may comprise a buffer configured to protect an optical layer of optic fiber 310, e.g., the buffer may protect an optical layer of a curved portion of optic fiber 310. In one or more embodiments, at least a portion of optic fiber 310 may comprise a polyimide buffer configured to protect an optical property of optic fiber 310. For example, at least a portion of optic fiber 310 may comprise a Kapton buffer configured to protect an optical property of optic fiber 310.

In one or more embodiments, a location wherein cable 910 may be fixed to housing tube 300 may be adjusted to vary an amount of actuation of auto-fixing actuation control 720 configured to curve housing tube 300 to a particular curved position. For example, a portion of cable 910 may be fixed to an outer portion of housing tube 300. Illustratively, cable 910 may be fixed to housing tube 300 at a plurality of fixation points, e.g., to vary one or more properties of a steerable laser probe. In one or more embodiments, a length of cable 910 may be adjusted to vary an amount of actuation of auto-fixing actuation control 720 configured to curve housing tube 300 to a particular curved position. Illustratively, a steerable laser probe may comprise one or more redundant cables 910. In one or more embodiments, one or more redundant cables 910 may be configured to maintain a particular curved position of housing tube 300, e.g., in the event that cable 910 breaks or fails. Illustratively, one or more redundant cables 910 may be configured to maintain a particular curved position of housing tube 300, e.g., in the event that a cable 910 fixation means fails. In one or more embodiments, one or more redundant cables 910 may be configured to maintain a particular curved position of housing tube 300, e.g., in the event that cable 910 is no longer configured to maintain the particular curved position of housing tube 300. Illustratively, one or more redundant cables 910 may be configured to maintain a particular curved position of housing tube 300 wherein cable 910 is also configured to maintain the particular curved position of housing tube 300.

In one or more embodiments, housing tube 300 may comprise an access window configured to allow access to a portion cable 910. Illustratively, cable 910 may be fixed to a portion of housing tube 300, e.g., by looping a portion of cable 910 through an aperture in housing tube 300. In one or more embodiments, cable 910 may be fixed to a portion of housing tube 300, e.g., by a purely mechanical means. For example, cable 910 may be fixed to a portion of housing tube 300 in a manner other than by an adhesive, a weld, etc. Illustratively, cable 910 may be fixed to a portion of housing tube 300 wherein a portion of cable 910 is configured to fail at a first applied failure force and a fixation means that fixes a portion of cable 910 to a portion of housing tube 300 is configured to fail at a second applied failure force. In one or more embodiments, the second applied failure force may be greater than the first applied failure force.

Illustratively, a steerable laser probe may be configured to indicate, e.g., to a surgeon, a direction that optic fiber 310 may curve, e.g., due to an actuation of auto-fixing actuation control 720 within actuation control guide 810. In one or more embodiments, a portion of a steerable laser probe, e.g., handle 800, may be marked in a manner configured to indicate a direction that optic fiber 310 may curve. For example, a portion of housing tube 300 may comprise a mark configured to indicate a direction that optic fiber 310 may curve. Illustratively, housing tube 300 may comprise a slight curve, e.g., a curve less than 7.5 degrees, when auto-fixing actuation control 720 is fully retracted relative to actuation control guide proximal end 812. For example, housing tube 300 may comprise a slight curve, e.g., a curve greater than 7.5 degrees, when auto-fixing actuation control 720 is fully retracted relative to actuation control guide proximal end 812. In one or more embodiments, housing tube 300 may comprise a slight curve configured to indicate a direction that optic fiber 310 may curve, e.g., due to an actuation of auto-fixing actuation control 720 within actuation control guide 810.

FIGS. 12A, 12B, 12C, 12D, and 12E are schematic diagrams illustrating a gradual straightening of an optic fiber 310. FIG. 12A illustrates a fully curved optic fiber 1200. In one or more embodiments, optic fiber 310 may comprise a fully curved optic fiber 1200, e.g., when auto-fixing actuation control 720 is fully extended relative to actuation control guide proximal end 812. Illustratively, optic fiber 310 may comprise a fully curved optic fiber 1200, e.g., when actuation mechanism 710 is fully extended relative to handle proximal end 802. For example, optic fiber 310 may comprise a fully curved optic fiber 1200, e.g., when first housing tube portion 320 is fully compressed. In one or more embodiments, a line tangent to optic fiber distal end 311 may be parallel to a line tangent to housing tube proximal end 302, e.g., when optic fiber 310 comprises a fully curved optic fiber 1200.

FIG. 12B illustrates an optic fiber in a first partially straightened position 1210. In one or more embodiments, a retraction of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to gradually straighten optic fiber 310 from a fully curved optic fiber 1200 to an optic fiber in a first partially straightened position 1210. Illustratively, a retraction of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to retract actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, a retraction of actuation mechanism 710 relative to handle proximal end 802 may be configured to retract housing tube 300 relative to cable 910. Illustratively, a portion of cable 910, e.g., a portion of cable 910 fixed to housing tube 300, may be configured to facilitate a retraction of housing tube 300 relative to cable 910. In one or more embodiments, a portion of cable 910 may be configured to reduce a force applied to a portion of housing tube 300, e.g., due to a retraction of housing tube 300 relative to cable 910. Illustratively, a reduction of a force applied to a portion of housing tube 300 may be configured to decompress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a decompression of a portion of housing tube 300 may cause housing tube 300 to gradually straighten. Illustratively, a gradual straightening of housing tube 300 may be configured to gradually straighten optic fiber 310, e.g., from a fully curved optic fiber 1200 to an optic fiber in a first partially straightened position 1210. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a first partially straightened angle, e.g., when optic fiber 310 comprises an optic fiber in a first partially straightened position 1210. Illustratively, the first partially straightened angle may comprise any angle less than 180 degrees. For example, the first partially straightened angle may comprise a 135 degree angle.

FIG. 12C illustrates an optic fiber in a second partially straightened position 1220. In one or more embodiments, a retraction of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to gradually straighten optic fiber 310 from an optic fiber in a first partially straightened position 1210 to an optic fiber in a second partially straightened position 1220. Illustratively, a refraction of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to retract actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, a retraction of actuation mechanism 710 relative to handle proximal end 802 may be configured to retract housing tube 300 relative to cable 910. Illustratively, a portion of cable 910, e.g., a portion of cable 910 fixed to housing tube 300, may be configured to facilitate a retraction of housing tube 300 relative to cable 910. In one or more embodiments, a portion of cable 910 may be configured to reduce a force applied to a portion of housing tube 300, e.g., due to a retraction of housing tube 300 relative to cable 910. Illustratively, a reduction of a force applied to a portion of housing tube 300 may be configured to decompress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a decompression of a portion of housing tube 300 may cause housing tube 300 to gradually straighten. Illustratively, a gradual straightening of housing tube 300 may be configured to gradually straighten optic fiber 310, e.g., from an optic fiber in a first partially straightened position 1210 to an optic fiber in a second partially straightened position 1220. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a second partially straightened angle, e.g., when optic fiber 310 comprises an optic fiber in a second partially straightened position 1220. Illustratively, the second partially straightened angle may comprise any angle less than the first partially straightened angle. For example, the second partially straightened angle may comprise a 90 degree angle.

FIG. 12D illustrates an optic fiber in a third partially straightened position 1230. In one or more embodiments, a retraction of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to gradually straighten optic fiber 310 from an optic fiber in a second partially straightened position 1220 to an optic fiber in a third partially straightened position 1230. Illustratively, a refraction of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to retract actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, a retraction of actuation mechanism 710 relative to handle proximal end 802 may be configured to retract housing tube 300 relative to cable 910. Illustratively, a portion of cable 910, e.g., a portion of cable 910 fixed to housing tube 300, may be configured to facilitate a retraction of housing tube 300 relative to cable 910. In one or more embodiments, a portion of cable 910 may be configured to reduce a force applied to a portion of housing tube 300, e.g., due to a retraction of housing tube 300 relative to cable 910. Illustratively, a reduction of a force applied to a portion of housing tube 300 may be configured to decompress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a decompression of a portion of housing tube 300 may cause housing tube 300 to gradually straighten. Illustratively, a gradual straightening of housing tube 300 may be configured to gradually straighten optic fiber 310, e.g., from an optic fiber in a second partially straightened position 1220 to an optic fiber in a third partially straightened position 1230. In one or more embodiments, a line tangent to optic fiber distal end 311 may intersect a line tangent to housing tube proximal end 302 at a third partially straightened angle, e.g., when optic fiber 310 comprises an optic fiber in a third partially straightened position 1230. Illustratively, the third partially straightened angle may comprise any angle less than the second partially straightened angle. For example, the third partially straightened angle may comprise a 45 degree angle.

FIG. 12E illustrates an optic fiber in a fully straightened position 1240. In one or more embodiments, a retraction of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to gradually straighten optic fiber 310 from an optic fiber in a third partially straightened position 1230 to an optic fiber in a fully straightened position 1240. Illustratively, a retraction of auto-fixing actuation control 720 relative to actuation control guide proximal end 812 may be configured to retract actuation mechanism 710 relative to handle proximal end 802. In one or more embodiments, a refraction of actuation mechanism 710 relative to handle proximal end 802 may be configured to retract housing tube 300 relative to cable 910. Illustratively, a portion of cable 910, e.g., a portion of cable 910 fixed to housing tube 300, may be configured to facilitate a retraction of housing tube 300 relative to cable 910. In one or more embodiments, a portion of cable 910 may be configured to reduce a force applied to a portion of housing tube 300, e.g., due to a retraction of housing tube 300 relative to cable 910. Illustratively, a reduction of a force applied to a portion of housing tube 300 may be configured to decompress a portion of housing tube 300, e.g., first housing tube portion 320. In one or more embodiments, a decompression of a portion of housing tube 300 may cause housing tube 300 to gradually straighten. Illustratively, a gradual straightening of housing tube 300 may be configured to gradually straighten optic fiber 310, e.g., from an optic fiber in a third partially straightened position 1230 to an optic fiber in a fully straightened position 1240. In one or more embodiments, a line tangent to optic fiber distal end 311 may be parallel to a line tangent to housing tube proximal end 302, e.g., when optic fiber 310 comprises an optic fiber in a fully straightened position 1240.

Illustratively, a surgeon may aim optic fiber distal end 311 at any of a plurality of targets within an eye, e.g., to perform a photocoagulation procedure, to illuminate a surgical target site, etc. In one or more embodiments, a surgeon may aim optic fiber distal end 311 at any target within a particular transverse plane of the inner eye by, e.g., rotating handle 800 to orient housing tube 300 in an orientation configured to cause a curvature of housing tube 300 within the particular transverse plane of the inner eye and varying an amount of actuation of auto-fixing actuation control 720 within actuation control guide 810. Illustratively, a surgeon may aim optic fiber distal end 311 at any target within a particular sagittal plane of the inner eye by, e.g., rotating handle 800 to orient housing tube 300 in an orientation configured to cause a curvature of housing tube 300 within the particular sagittal plane of the inner eye and varying an amount of actuation of auto-fixing actuation control 720 within actuation control guide 810. In one or more embodiments, a surgeon may aim optic fiber distal end 311 at any target within a particular frontal plane of the inner eye by, e.g., varying an amount of actuation of auto-fixing actuation control 720 within actuation control guide 810 to orient a line tangent to optic fiber distal end 311 wherein the line tangent to optic fiber distal end 311 is within the particular frontal plane of the inner eye and rotating handle 800. Illustratively, a surgeon may aim optic fiber distal end 311 at any target located outside of the particular transverse plane, the particular sagittal plane, and the particular frontal plane of the inner eye, e.g., by varying a rotational orientation of handle 800 and varying an amount of actuation of auto-fixing actuation control 720 within actuation control guide 810. In one or more embodiments, a surgeon may aim optic fiber distal end 311 at any target of a plurality of targets within an eye, e.g., without increasing a length of a portion of a steerable laser probe within the eye. Illustratively, a surgeon may aim optic fiber distal end 311 at any target of a plurality of targets within an eye, e.g., without decreasing a length of a portion of a steerable laser probe within the eye.

The foregoing description has been directed to particular embodiments of this invention. It will be apparent; however, that other variations and modifications may be made to the described embodiments, with the attainment of some or all of their advantages. Specifically, it should be noted that the principles of the present invention may be implemented in any system. Furthermore, while this description has been written in terms of a surgical instrument, the teachings of the present invention are equally suitable to any systems where the functionality may be employed. Therefore, it is the object of the appended claims to cover all such variations and modifications as come within the true spirit and scope of the invention. 

What is claimed is:
 1. An instrument comprising: a handle having a handle distal end and a handle proximal end; a handle end cap of the handle having a handle end cap distal end and a handle end cap proximal end; an actuation control guide of the handle, the actuation control guide having an actuation control guide distal end and an actuation control guide proximal end; an actuation mechanism of the handle having an actuation mechanism distal end and an actuation mechanism proximal end, the actuation mechanism disposed in an actuation mechanism guide of the handle wherein the actuation mechanism proximal end is disposed in a housing of the handle end cap and wherein the actuation mechanism proximal end is disposed between the handle end cap distal end and the handle end cap proximal end; an auto-fixing actuation control of the actuation mechanism having an auto-fixing actuation control distal end and an auto-fixing actuation control proximal end, the auto-fixing actuation control disposed within the actuation control guide wherein the auto-fixing actuation control is configured to actuate within the actuation control guide while a first force is applied to the auto-fixing actuation control; a single housing tube having a housing tube distal end and a housing tube proximal end, the housing tube having dimensions configured for performing microsurgical procedures through a cannula, the housing tube disposed within a housing tube guide of the handle and a housing tube housing of the actuation mechanism wherein the housing tube proximal end is fixed within the housing tube housing and the housing tube distal end extends from the handle distal end; a first housing tube portion of the housing tube, the first housing tube portion having a first stiffness; a plurality of apertures of the first housing tube portion; a second housing tube portion of the housing tube, the second housing tube portion having a second stiffness wherein the second stiffness is greater than the first stiffness; an auto-fixing component of the handle having an auto-fixing component distal end and an auto-fixing component proximal end wherein the auto-fixing actuation control is disposed between the auto-fixing component distal end and the auto-fixing component proximal end, the auto-fixing component disposed in an auto-fixing component housing of the handle wherein a portion of the auto-fixing component is adjacent to a portion of the auto-fixing actuation control and wherein a second force between the portion of the auto-fixing component and the portion of the auto-fixing actuation control is configured to temporarily fix the auto-fixing actuation control in any position within the actuation control guide while the first force is not applied to the auto-fixating actuation control; and an optic fiber having an optic fiber distal end and an optic fiber proximal end, the optic fiber disposed within an inner bore of the handle and the housing tube.
 2. The instrument of claim 1 wherein an extension of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to gradually curve the optic fiber.
 3. The instrument of claim 2 wherein the extension of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to gradually curve the housing tube.
 4. The instrument of claim 3 wherein the extension of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to extend the housing tube relative to the optic fiber.
 5. The instrument of claim 4 wherein the extension of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to compress a portion of the housing tube.
 6. The instrument of claim 5 wherein the portion of the housing tube is the first housing tube portion of the housing tube.
 7. The instrument of claim 1 wherein a retraction of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to gradually straighten the optic fiber.
 8. The instrument of claim 7 wherein the retraction of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to gradually straighten the housing tube.
 9. The instrument of claim 8 wherein the retraction of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to retract the housing tube relative to the optic fiber.
 10. The instrument of claim 9 wherein the retraction of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to decompress a portion of the housing tube.
 11. The instrument of claim 10 wherein the portion of the housing tube is the first housing tube portion of the housing tube.
 12. The instrument of claim 1 further comprising: a cable having a cable distal end and a cable proximal end, the cable disposed in the inner bore of the handle and the housing tube.
 13. The instrument of claim 12 wherein an extension of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to gradually curve the optic fiber.
 14. The instrument of claim 13 wherein the extension of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to gradually curve the housing tube.
 15. The instrument of claim 14 wherein the extension of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to compress the first housing tube portion of the housing tube.
 16. The instrument of claim 12 wherein a retraction of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to gradually straighten the optic fiber.
 17. The instrument of claim 16 wherein the retraction of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to gradually straighten the housing tube.
 18. The instrument of claim 17 wherein the retraction of the auto-fixing actuation control relative to the actuation control guide proximal end is configured to decompress the first housing tube portion of the housing tube.
 19. The instrument of claim 12 wherein the auto-fixing actuation control comprises a permanent magnet.
 20. The instrument of claim 12 wherein the auto-fixing component comprises a permanent magnet. 